411 REFERENCE · Wiktionary
Platonic month
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English
Noun
en astronomy astrology One twelfth of a Great Year, corresponding to one of the zodiacal ages (roughly 2000 years).
en 1981 w:William Irwin Thompson The Time Falling Bodies Take to Light: Mythology, Sexuality and the Origins of Culture Rider/Hutchinson & Co. London 207 Sumerian civilization lasted for an entire Platonic month from 4000 to 2000 B.C.
en eponyms